TekTone®'s
PM900 No-Telephone-Line Control Unit with Cabinet is for use with
TekTone®'s Tek-ENTRY® Telephone Entry Systems, for installation as a
no-phone-line system.

For no-phone-line service
capability, include all of the required components of a standard Tek-ENTRY®
system, plus: a PM-900 Control Unit, IH-966 Relay Board Cabinet (96
lines), RY-912 Relay Board (1 per 12 lines), and a CT-912 Connector
Assembly (1 per RY-912). All equipment should be located in the telephone
room.